What question did this study set out to answer?

This study aims to determine if lesser tuberosity osteotomy affects stability in stemless shoulder arthroplasty among patients with low bone density.

Effect of Bone Density and Lesser Tuberosity Osteotomy on Stemmed and Stemless Shoulder Arthroplasty Stability: A Biomechanical Study

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Biomechanical study evaluates shoulder arthroplasty stability concerning bone density and osteotomy, indicating safety of LTO.

This study aims to determine if lesser tuberosity osteotomy affects stability in stemless shoulder arthroplasty among patients with low bone density.
Assessed humeral samples using a biomechanical testing device
Used dual-energy x-ray absorptiometry to determine bone mineral density
Randomized samples into three implant cohorts for analysis of micromotion and stability
Increased micromotion observed at 820 N axial load for stemless implants (p < 0.001)
Reduced torsional stability found in stemless versus stemmed implants (p < 0.001)
Lesser tuberosity osteotomy did not increase micromotion for any implant type
Decreased bone mineral density correlated with increased instability across all implants (p < 0.001)

Greif et al. (2026) studied this question.

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